package com.sky.service.impl;


import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password=DigestUtils.md5DigestAsHex(password.getBytes());  //对前端传过来的密码进行MD5加密
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    //新增员工
    @Override
    public void add(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置账号状态  1:表示正常  0:表示锁定
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码。默认;123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置创建和修改时间
       // employee.setCreateTime(LocalDateTime.now());
       // employee.setUpdateTime(LocalDateTime.now());
//TODO 后期需要改为用户ID
//employee.setCreateUser(BaseContext.getCurrentId());
//employee.setUpdateUser(BaseContext.getCurrentId());
employeeMapper.add(employee);
    }
    /**
     * 分页查询
     *
     */
    @Override
    public PageResult selects(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始动态分页查询自动将limit拼接和动态分页参数
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee> page= employeeMapper.selects(employeePageQueryDTO);
        long total=page.getTotal();
        List<Employee> records=page.getResult();
       return new PageResult(total,records);
    }
//启用禁用
    @Override
    public void startorstop(Integer status, Long id) {
        Employee employee=new Employee();
        employee.setStatus(status);
        employee.setId(id);

employeeMapper.statorstop(employee);
    }
    //根据id查询
    @Override
    public Employee getById(Long id) {
        Employee byId = employeeMapper.getById(id);
        byId.setPassword("*****");
        return byId;
    }
    //编辑员工
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
        //拷贝,将一个对象的属性值复制到另一个对象中
        BeanUtils.copyProperties(employeeDTO,employee);
       // employee.setUpdateTime(LocalDateTime.now());
       // employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.statorstop(employee);
    }



}
